'use strict';
var number_map_to_word = function(collection){
  // String.fromCharCode(97+collection[i]-1)
  var result = [];
  for (let i = 0; i < collection.length; i++) {
    result.push(String.fromCharCode(97+collection[i]-1))
  }
  return result;
};

module.exports = number_map_to_word;
